I've got a pair of yamaha c112 pa tops at home that I really like playing bass through. They don't have any low end under about 100hz but, I actually like that sound. It's kind of like playing through sealed cabs. I was wondering what kind of result I would get by replacing the woofers (probably a modded alpha or delta eminence) eminence 3012ho drivers? Those drivers look like they would work well in the yamaha cabs. I think the horn is crossed over at 2k or lower. I know that the kappalite's are more efficient. Thanks for any help guys.